HP P4000 HP Smart Array SAS controllers for Integrity servers support guide - Page 142

S.M.A.R.T., Disks RAID

Get HP P4000 PDF manuals and user guides View all HP P4000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 142 highlights

logical drive capacity extension online spare PCIe rebuild Redundant Array of Independent Disks (RAID) SCSI ID Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) Simple Network Management Protocol (SNMP) Single-Ended (SE) spare striping surface analysis logical drive has performance advantages over individual physical disks. Also known as a logical volume. See capacity extension. A disk in a fault-tolerant system that normally contains no data. When another disk in the array fails, the controller rebuilds the data that was on the failed disk to the online spare. Also known as a hot spare. An enhanced PCI bus that enables operation at 266 MHz, equivalent to a data throughput of 2.5 GB/s. See Automatic Data Recovery. A form of fault tolerance. RAID 0 (no fault tolerance) uses data striping to distribute data evenly across all physical disks in the array, but has no redundant data. RAID 1+0 (disk mirroring) duplicates data from one disk onto a second disk. RAID 5 (distributed data guarding) distributes parity data across all disks in the array, and uses the parity data and data on remaining disks to reconstruct data from a failed disk. RAID ADG (advanced data guarding) is similar to RAID 5, but uses two independent sets of parity data. A unique ID number assigned to each SCSI device connected to a SCSI bus. The ID number determines the device priority on the SCSI bus; ID 7 is the highest priority and is always assigned to the SCSI controller. Technology co-developed by HP and the physical disk industry that provides warning of imminent disk failure. S.M.A.R.T. enables HP to offer Pre-Failure Warranty replacement of physical disks. S.M.A.R.T. supersedes the disk parameter tracking feature that was previously used, because the self-monitoring routines used in S.M.A.R.T. are more accurate than the disk parameter tracking tests. The self-monitoring routines are customized for each specific disk type and have direct access to internal performance, calibration, and error measurements. Governs network management and the monitoring of network devices and functions. A type of SCSI signaling that enables a maximum transfer rate of 40 MB/s. Conforms to the Wide-Ultra SCSI standard. Now being phased out in favor of LVD technology. See online spare. See data striping. See Auto-Reliability Monitoring. 142 Glossary

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
logical drive has performance advantages over individual physical disks. Also known as a
logical volume.
logical drive
capacity
extension
See capacity extension.
online spare
A disk in a fault-tolerant system that normally contains no data. When another disk in the array
fails, the controller rebuilds the data that was on the failed disk to the online spare. Also known
as a hot spare.
PCIe
An enhanced PCI bus that enables operation at 266 MHz, equivalent to a data throughput of
2.5 GB/s.
rebuild
See Automatic Data Recovery.
Redundant Array
of Independent
Disks (RAID)
A form of fault tolerance. RAID 0 (no fault tolerance) uses data striping to distribute data evenly
across all physical disks in the array, but has no redundant data. RAID 1+0 (disk mirroring)
duplicates data from one disk onto a second disk. RAID 5 (distributed data guarding) distributes
parity data across all disks in the array, and uses the parity data and data on remaining disks
to reconstruct data from a failed disk. RAID ADG (advanced data guarding) is similar to RAID
5, but uses two independent sets of parity data.
SCSI ID
A unique ID number assigned to each SCSI device connected to a SCSI bus. The ID number
determines the device priority on the SCSI bus; ID 7 is the highest priority and is always assigned
to the SCSI controller.
Self-Monitoring,
Analysis, and
Reporting
Technology
(S.M.A.R.T.)
Technology co-developed by HP and the physical disk industry that provides warning of
imminent disk failure. S.M.A.R.T. enables HP to offer Pre-Failure Warranty replacement of
physical disks. S.M.A.R.T. supersedes the disk parameter tracking feature that was previously
used, because the self-monitoring routines used in S.M.A.R.T. are more accurate than the disk
parameter tracking tests. The self-monitoring routines are customized for each specific disk
type and have direct access to internal performance, calibration, and error measurements.
Simple Network
Management
Protocol (SNMP)
Governs network management and the monitoring of network devices and functions.
Single-Ended (SE)
A type of SCSI signaling that enables a maximum transfer rate of 40 MB/s. Conforms to the
Wide-Ultra SCSI standard. Now being phased out in favor of LVD technology.
spare
See online spare.
striping
See data striping.
surface analysis
See Auto-Reliability Monitoring.
142
Glossary